Thanks - but I already thought of that so I have checked and changed the security properties in
d:\perl - and all subfolders - and have set 'full access' to all of the users listed - including everyone
and - because this is only a test server - I have also done the same on d:\wwwroot and all subfolders.
I have used IIS manager to set
Script Source Access, Read and Write
permissions on all web sites
Execute permissions are set to 'Scripts and Executables' on all web sites
It still fails!!!!